Godot
/
godot-docs
mirror of https://github.com/godotengine/godot-docs.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223
							:github_url: hide

.. DO NOT EDIT THIS FILE!!!
.. Generated automatically from Godot engine sources.
.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/ResourceLoader.xml.

.. _class_ResourceLoader:

ResourceLoader
==============

**Inherits:** :ref:`Object<class_Object>`

Singleton used to load resource files.

Description
-----------

Singleton used to load resource files from the filesystem.

It uses the many :ref:`ResourceFormatLoader<class_ResourceFormatLoader>` classes registered in the engine (either built-in or from a plugin) to load files into memory and convert them to a format that can be used by the engine.

\ **Note:** You have to import the files into the engine first to load them using :ref:`load<class_ResourceLoader_method_load>`. If you want to load :ref:`Image<class_Image>`\ s at run-time, you may use :ref:`Image.load<class_Image_method_load>`. If you want to import audio files, you can use the snippet described in :ref:`AudioStreamMP3.data<class_AudioStreamMP3_property_data>`.

Tutorials
---------

- `OS Test Demo <https://godotengine.org/asset-library/asset/677>`__

Methods
-------

+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                          | :ref:`add_resource_format_loader<class_ResourceLoader_method_add_resource_format_loader>` **(** :ref:`ResourceFormatLoader<class_ResourceFormatLoader>` format_loader, :ref:`bool<class_bool>` at_front=false **)**   |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`bool<class_bool>`                                       | :ref:`exists<class_ResourceLoader_method_exists>` **(** :ref:`String<class_String>` path, :ref:`String<class_String>` type_hint="" **)**                                                                              |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`PackedStringArray<class_PackedStringArray>`             | :ref:`get_dependencies<class_ResourceLoader_method_get_dependencies>` **(** :ref:`String<class_String>` path **)**                                                                                                    |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`PackedStringArray<class_PackedStringArray>`             | :ref:`get_recognized_extensions_for_type<class_ResourceLoader_method_get_recognized_extensions_for_type>` **(** :ref:`String<class_String>` type **)**                                                                |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`int<class_int>`                                         | :ref:`get_resource_uid<class_ResourceLoader_method_get_resource_uid>` **(** :ref:`String<class_String>` path **)**                                                                                                    |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`bool<class_bool>`                                       | :ref:`has_cached<class_ResourceLoader_method_has_cached>` **(** :ref:`String<class_String>` path **)**                                                                                                                |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Resource<class_Resource>`                               | :ref:`load<class_ResourceLoader_method_load>` **(** :ref:`String<class_String>` path, :ref:`String<class_String>` type_hint="", :ref:`CacheMode<enum_ResourceLoader_CacheMode>` cache_mode=1 **)**                    |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Resource<class_Resource>`                               | :ref:`load_threaded_get<class_ResourceLoader_method_load_threaded_get>` **(** :ref:`String<class_String>` path **)**                                                                                                  |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`ThreadLoadStatus<enum_ResourceLoader_ThreadLoadStatus>` | :ref:`load_threaded_get_status<class_ResourceLoader_method_load_threaded_get_status>` **(** :ref:`String<class_String>` path, :ref:`Array<class_Array>` progress=[] **)**                                             |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Error<enum_@GlobalScope_Error>`                         | :ref:`load_threaded_request<class_ResourceLoader_method_load_threaded_request>` **(** :ref:`String<class_String>` path, :ref:`String<class_String>` type_hint="", :ref:`bool<class_bool>` use_sub_threads=false **)** |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                          | :ref:`remove_resource_format_loader<class_ResourceLoader_method_remove_resource_format_loader>` **(** :ref:`ResourceFormatLoader<class_ResourceFormatLoader>` format_loader **)**                                     |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                          | :ref:`set_abort_on_missing_resources<class_ResourceLoader_method_set_abort_on_missing_resources>` **(** :ref:`bool<class_bool>` abort **)**                                                                           |
+---------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Enumerations
------------

.. _enum_ResourceLoader_ThreadLoadStatus:

.. _class_ResourceLoader_constant_THREAD_LOAD_INVALID_RESOURCE:

.. _class_ResourceLoader_constant_THREAD_LOAD_IN_PROGRESS:

.. _class_ResourceLoader_constant_THREAD_LOAD_FAILED:

.. _class_ResourceLoader_constant_THREAD_LOAD_LOADED:

enum **ThreadLoadStatus**:

- **THREAD_LOAD_INVALID_RESOURCE** = **0** --- The resource is invalid, or has not been loaded with :ref:`load_threaded_request<class_ResourceLoader_method_load_threaded_request>`.

- **THREAD_LOAD_IN_PROGRESS** = **1** --- The resource is still being loaded.

- **THREAD_LOAD_FAILED** = **2** --- Some error occurred during loading and it failed.

- **THREAD_LOAD_LOADED** = **3** --- The resource was loaded successfully and can be accessed via :ref:`load_threaded_get<class_ResourceLoader_method_load_threaded_get>`.

----

.. _enum_ResourceLoader_CacheMode:

.. _class_ResourceLoader_constant_CACHE_MODE_IGNORE:

.. _class_ResourceLoader_constant_CACHE_MODE_REUSE:

.. _class_ResourceLoader_constant_CACHE_MODE_REPLACE:

enum **CacheMode**:

- **CACHE_MODE_IGNORE** = **0**

- **CACHE_MODE_REUSE** = **1**

- **CACHE_MODE_REPLACE** = **2**

Method Descriptions
-------------------

.. _class_ResourceLoader_method_add_resource_format_loader:

- void **add_resource_format_loader** **(** :ref:`ResourceFormatLoader<class_ResourceFormatLoader>` format_loader, :ref:`bool<class_bool>` at_front=false **)**

Registers a new :ref:`ResourceFormatLoader<class_ResourceFormatLoader>`. The ResourceLoader will use the ResourceFormatLoader as described in :ref:`load<class_ResourceLoader_method_load>`.

This method is performed implicitly for ResourceFormatLoaders written in GDScript (see :ref:`ResourceFormatLoader<class_ResourceFormatLoader>` for more information).

----

.. _class_ResourceLoader_method_exists:

- :ref:`bool<class_bool>` **exists** **(** :ref:`String<class_String>` path, :ref:`String<class_String>` type_hint="" **)**

Returns whether a recognized resource exists for the given ``path``.

An optional ``type_hint`` can be used to further specify the :ref:`Resource<class_Resource>` type that should be handled by the :ref:`ResourceFormatLoader<class_ResourceFormatLoader>`. Anything that inherits from :ref:`Resource<class_Resource>` can be used as a type hint, for example :ref:`Image<class_Image>`.

----

.. _class_ResourceLoader_method_get_dependencies:

- :ref:`PackedStringArray<class_PackedStringArray>` **get_dependencies** **(** :ref:`String<class_String>` path **)**

Returns the dependencies for the resource at the given ``path``.

----

.. _class_ResourceLoader_method_get_recognized_extensions_for_type:

- :ref:`PackedStringArray<class_PackedStringArray>` **get_recognized_extensions_for_type** **(** :ref:`String<class_String>` type **)**

Returns the list of recognized extensions for a resource type.

----

.. _class_ResourceLoader_method_get_resource_uid:

- :ref:`int<class_int>` **get_resource_uid** **(** :ref:`String<class_String>` path **)**

Returns the ID associated with a given resource path, or ``-1`` when no such ID exists.

----

.. _class_ResourceLoader_method_has_cached:

- :ref:`bool<class_bool>` **has_cached** **(** :ref:`String<class_String>` path **)**

Returns whether a cached resource is available for the given ``path``.

Once a resource has been loaded by the engine, it is cached in memory for faster access, and future calls to the :ref:`load<class_ResourceLoader_method_load>` method will use the cached version. The cached resource can be overridden by using :ref:`Resource.take_over_path<class_Resource_method_take_over_path>` on a new resource for that same path.

----

.. _class_ResourceLoader_method_load:

- :ref:`Resource<class_Resource>` **load** **(** :ref:`String<class_String>` path, :ref:`String<class_String>` type_hint="", :ref:`CacheMode<enum_ResourceLoader_CacheMode>` cache_mode=1 **)**

Loads a resource at the given ``path``, caching the result for further access.

The registered :ref:`ResourceFormatLoader<class_ResourceFormatLoader>`\ s are queried sequentially to find the first one which can handle the file's extension, and then attempt loading. If loading fails, the remaining ResourceFormatLoaders are also attempted.

An optional ``type_hint`` can be used to further specify the :ref:`Resource<class_Resource>` type that should be handled by the :ref:`ResourceFormatLoader<class_ResourceFormatLoader>`. Anything that inherits from :ref:`Resource<class_Resource>` can be used as a type hint, for example :ref:`Image<class_Image>`.

The ``cache_mode`` property defines whether and how the cache should be used or updated when loading the resource. See :ref:`CacheMode<enum_ResourceLoader_CacheMode>` for details.

Returns an empty resource if no :ref:`ResourceFormatLoader<class_ResourceFormatLoader>` could handle the file.

GDScript has a simplified :ref:`@GDScript.load<class_@GDScript_method_load>` built-in method which can be used in most situations, leaving the use of ``ResourceLoader`` for more advanced scenarios.

----

.. _class_ResourceLoader_method_load_threaded_get:

- :ref:`Resource<class_Resource>` **load_threaded_get** **(** :ref:`String<class_String>` path **)**

Returns the resource loaded by :ref:`load_threaded_request<class_ResourceLoader_method_load_threaded_request>`.

If this is called before the loading thread is done (i.e. :ref:`load_threaded_get_status<class_ResourceLoader_method_load_threaded_get_status>` is not :ref:`THREAD_LOAD_LOADED<class_ResourceLoader_constant_THREAD_LOAD_LOADED>`), the calling thread will be blocked until the resource has finished loading.

----

.. _class_ResourceLoader_method_load_threaded_get_status:

- :ref:`ThreadLoadStatus<enum_ResourceLoader_ThreadLoadStatus>` **load_threaded_get_status** **(** :ref:`String<class_String>` path, :ref:`Array<class_Array>` progress=[] **)**

Returns the status of a threaded loading operation started with :ref:`load_threaded_request<class_ResourceLoader_method_load_threaded_request>` for the resource at ``path``. See :ref:`ThreadLoadStatus<enum_ResourceLoader_ThreadLoadStatus>` for possible return values.

An array variable can optionally be passed via ``progress``, and will return a one-element array containing the percentage of completion of the threaded loading.

----

.. _class_ResourceLoader_method_load_threaded_request:

- :ref:`Error<enum_@GlobalScope_Error>` **load_threaded_request** **(** :ref:`String<class_String>` path, :ref:`String<class_String>` type_hint="", :ref:`bool<class_bool>` use_sub_threads=false **)**

Loads the resource using threads. If ``use_sub_threads`` is ``true``, multiple threads will be used to load the resource, which makes loading faster, but may affect the main thread (and thus cause game slowdowns).

----

.. _class_ResourceLoader_method_remove_resource_format_loader:

- void **remove_resource_format_loader** **(** :ref:`ResourceFormatLoader<class_ResourceFormatLoader>` format_loader **)**

Unregisters the given :ref:`ResourceFormatLoader<class_ResourceFormatLoader>`.

----

.. _class_ResourceLoader_method_set_abort_on_missing_resources:

- void **set_abort_on_missing_resources** **(** :ref:`bool<class_bool>` abort **)**

Changes the behavior on missing sub-resources. The default behavior is to abort loading.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`